diff --git a/tools/cert_create/Makefile b/tools/cert_create/Makefile
index b0994b8..8a1958f 100644
--- a/tools/cert_create/Makefile
+++ b/tools/cert_create/Makefile
@@ -86,5 +86,5 @@
 	$(call SHELL_DELETE_ALL, src/build_msg.o ${OBJECTS})
 
 realclean: clean
-	$(call SHELL_DELETE, ${BINARY})
+	$(call SHELL_DELETE,${BINARY})